Estimate the quotient by rounding the expression to relate to a one-digit fact. Explain your thinking in the space below. (20 points) 4.210 ÷ 73 ≈

(ex. ÷=)

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

Events a and b are independent. the probability of a occurring is 2/5. the probability of b occurring is 1/4. what is p(a and b)?

Suppose that 15 inches of wire cost 60 cents. at the same rate, how much (in cents) will 12 inches of wire cost